libavformat: add librist protocol
This work is sponsored by Open Broadcast Systems. Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
Marton Balint
parent
e93403b75f
commit
4098f809d6
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@ -259,6 +259,7 @@ External library support:
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--enable-libpulse enable Pulseaudio input via libpulse [no]
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--enable-librabbitmq enable RabbitMQ library [no]
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--enable-librav1e enable AV1 encoding via rav1e [no]
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--enable-librist enable RIST via librist [no]
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--enable-librsvg enable SVG rasterization via librsvg [no]
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--enable-librubberband enable rubberband needed for rubberband filter [no]
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--enable-librtmp enable RTMP[E] support via librtmp [no]
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@ -1797,6 +1798,7 @@ EXTERNAL_LIBRARY_LIST="
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libpulse
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librabbitmq
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librav1e
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librist
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librsvg
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librtmp
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libshine
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@ -3491,6 +3493,8 @@ unix_protocol_select="network"
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# external library protocols
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libamqp_protocol_deps="librabbitmq"
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libamqp_protocol_select="network"
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librist_protocol_deps="librist"
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librist_protocol_select="network"
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librtmp_protocol_deps="librtmp"
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librtmpe_protocol_deps="librtmp"
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librtmps_protocol_deps="librtmp"
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@ -6410,6 +6414,7 @@ enabled libopus && {
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enabled libpulse && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
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enabled librabbitmq && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
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enabled librav1e && require_pkg_config librav1e "rav1e >= 0.4.0" rav1e.h rav1e_context_new
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enabled librist && require_pkg_config librist "librist >= 0.2" librist/librist.h rist_receiver_create
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enabled librsvg && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
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enabled librtmp && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
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enabled librubberband && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
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@ -696,6 +696,35 @@ Example usage:
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-f rtp_mpegts -fec prompeg=l=8:d=4 rtp://@var{hostname}:@var{port}
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@end example
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@section rist
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Reliable Internet Streaming Transport protocol
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The accepted options are:
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@table @option
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@item rist_profile
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Supported values:
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@table @samp
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@item simple
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@item main
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This one is default.
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@item advanced
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@end table
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@item buffer_size
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Set internal RIST buffer size for retransmission of data.
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@item log_level
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Set loglevel for RIST logging messages.
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@item secret
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Set override of encryption secret, by default is unset.
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@item encryption
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Set encryption type, by default is disabled.
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Acceptable values are 128 and 256.
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@end table
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@section rtmp
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Real-Time Messaging Protocol.
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@ -657,6 +657,7 @@ OBJS-$(CONFIG_UNIX_PROTOCOL) += unix.o
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# external library protocols
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OBJS-$(CONFIG_LIBAMQP_PROTOCOL) += libamqp.o
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OBJS-$(CONFIG_LIBRIST_PROTOCOL) += librist.o
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OBJS-$(CONFIG_LIBRTMP_PROTOCOL) += librtmp.o
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OBJS-$(CONFIG_LIBRTMPE_PROTOCOL) += librtmp.o
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OBJS-$(CONFIG_LIBRTMPS_PROTOCOL) += librtmp.o
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@ -0,0 +1,236 @@
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Reliable Internet Streaming Transport protocol
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/time.h"
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#include "avformat.h"
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#include "internal.h"
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#include "network.h"
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#include "os_support.h"
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#include "url.h"
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#include <librist/librist.h>
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typedef struct RISTContext {
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const AVClass *class;
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int queue_count;
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int profile;
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int buffer_size;
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int log_level;
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int encryption;
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char *secret;
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struct rist_logging_settings logging_settings;
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struct rist_peer_config peer_config;
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struct rist_peer *peer;
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struct rist_ctx *ctx;
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} RISTContext;
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#define D AV_OPT_FLAG_DECODING_PARAM
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#define E AV_OPT_FLAG_ENCODING_PARAM
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#define OFFSET(x) offsetof(RISTContext, x)
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static const AVOption librist_options[] = {
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{ "rist_profile","set profile", OFFSET(profile), AV_OPT_TYPE_INT, {.i64=RIST_PROFILE_MAIN}, 0, 2, .flags = D|E, "profile" },
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{ "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_SIMPLE}, 0, 0, .flags = D|E, "profile" },
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{ "main", NULL, 0, AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_MAIN}, 0, 0, .flags = D|E, "profile" },
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{ "advanced", NULL, 0, AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_ADVANCED}, 0, 0, .flags = D|E, "profile" },
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{ "buffer_size", "set buffer_size", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, .flags = D|E },
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{ "log_level", "set loglevel", OFFSET(log_level), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = D|E },
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{ "secret", "set encryption secret",OFFSET(secret), AV_OPT_TYPE_STRING,{.str=NULL}, 0, 0, .flags = D|E },
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{ "encryption","set encryption type",OFFSET(encryption), AV_OPT_TYPE_INT ,{.i64=0}, 0, INT_MAX, .flags = D|E },
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{ NULL }
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};
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static int risterr2ret(int err)
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{
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switch (err) {
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case RIST_ERR_MALLOC:
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return AVERROR(ENOMEM);
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default:
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return AVERROR_EXTERNAL;
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}
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}
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static int log_cb(void *arg, enum rist_log_level log_level, const char *msg)
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{
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int level;
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switch (log_level) {
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case RIST_LOG_ERROR: level = AV_LOG_ERROR; break;
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case RIST_LOG_WARN: level = AV_LOG_WARNING; break;
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case RIST_LOG_NOTICE: level = AV_LOG_VERBOSE; break;
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case RIST_LOG_INFO: level = AV_LOG_INFO; break;
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case RIST_LOG_DEBUG: level = AV_LOG_DEBUG; break;
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case RIST_LOG_DISABLE: level = AV_LOG_QUIET; break;
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case RIST_LOG_SIMULATE: level = AV_LOG_TRACE; break;
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default: level = AV_LOG_PANIC;
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}
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av_log(arg, level, "%s", msg);
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return 0;
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}
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static int librist_close(URLContext *h)
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{
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RISTContext *s = h->priv_data;
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int ret = 0;
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s->peer = NULL;
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if (s->ctx)
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ret = rist_destroy(s->ctx);
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s->ctx = NULL;
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return risterr2ret(ret);
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}
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static int librist_open(URLContext *h, const char *uri, int flags)
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{
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RISTContext *s = h->priv_data;
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struct rist_logging_settings *logging_settings = &s->logging_settings;
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struct rist_peer_config *peer_config = &s->peer_config;
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int ret;
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if ((flags & AVIO_FLAG_READ_WRITE) == AVIO_FLAG_READ_WRITE)
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return AVERROR(EINVAL);
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ret = rist_logging_set(&logging_settings, s->log_level, log_cb, h, NULL, NULL);
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if (ret < 0)
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return risterr2ret(ret);
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if (flags & AVIO_FLAG_WRITE)
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ret = rist_sender_create(&s->ctx, s->profile, 0, logging_settings);
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if (ret < 0)
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goto err;
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if (flags & AVIO_FLAG_READ)
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ret = rist_receiver_create(&s->ctx, s->profile, logging_settings);
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if (ret < 0)
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goto err;
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ret = rist_peer_config_defaults_set(peer_config);
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if (ret < 0)
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goto err;
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ret = rist_parse_address(uri, (const struct rist_peer_config **)&peer_config);
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if (ret < 0)
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goto err;
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if (((s->encryption == 128 || s->encryption == 256) && !s->secret) ||
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((peer_config->key_size == 128 || peer_config->key_size == 256) && !peer_config->secret[0])) {
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av_log(h, AV_LOG_ERROR, "secret is mandatory if encryption is enabled\n");
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librist_close(h);
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return AVERROR(EINVAL);
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}
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if (s->secret && peer_config->secret[0] == 0)
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av_strlcpy(peer_config->secret, s->secret, FFMIN(RIST_MAX_STRING_SHORT - 1, strlen(s->secret)));
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if (s->secret && (s->encryption == 128 || s->encryption == 256))
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peer_config->key_size = s->encryption;
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if (s->buffer_size) {
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peer_config->recovery_length_min = s->buffer_size;
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peer_config->recovery_length_max = s->buffer_size;
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}
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ret = rist_peer_create(s->ctx, &s->peer, &s->peer_config);
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if (ret < 0)
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goto err;
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ret = rist_start(s->ctx);
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if (ret < 0)
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goto err;
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h->max_packet_size = 9968;
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return 0;
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err:
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librist_close(h);
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return risterr2ret(ret);
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}
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static int librist_read(URLContext *h, uint8_t *buf, int size)
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{
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RISTContext *s = h->priv_data;
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const struct rist_data_block *data_block;
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int ret;
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ret = rist_receiver_data_read(s->ctx, &data_block, s->queue_count <= 0 ? POLLING_TIME : 0);
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if (ret < 0)
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return risterr2ret(ret);
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if (ret == 0 || data_block->payload_len <= 0)
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return 0;
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s->queue_count = ret - 1;
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size = data_block->payload_len;
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memcpy(buf, data_block->payload, size);
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rist_receiver_data_block_free((struct rist_data_block**)&data_block);
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return size;
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}
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static int librist_write(URLContext *h, const uint8_t *buf, int size)
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{
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RISTContext *s = h->priv_data;
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struct rist_data_block data_block = { 0 };
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int ret;
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data_block.ts_ntp = 0;
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data_block.payload = buf;
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data_block.payload_len = size;
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ret = rist_sender_data_write(s->ctx, &data_block);
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if (ret < 0)
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return risterr2ret(ret);
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return ret;
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}
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static const AVClass librist_class = {
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.class_name = "librist",
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.item_name = av_default_item_name,
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.option = librist_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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const URLProtocol ff_librist_protocol = {
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.name = "rist",
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.url_open = librist_open,
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.url_read = librist_read,
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.url_write = librist_write,
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.url_close = librist_close,
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.priv_data_size = sizeof(RISTContext),
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.flags = URL_PROTOCOL_FLAG_NETWORK,
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.priv_data_class = &librist_class,
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};
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@ -62,6 +62,7 @@ extern const URLProtocol ff_udp_protocol;
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extern const URLProtocol ff_udplite_protocol;
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extern const URLProtocol ff_unix_protocol;
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extern const URLProtocol ff_libamqp_protocol;
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extern const URLProtocol ff_librist_protocol;
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extern const URLProtocol ff_librtmp_protocol;
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extern const URLProtocol ff_librtmpe_protocol;
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extern const URLProtocol ff_librtmps_protocol;
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